XML 61 R95.htm IDEA: XBRL DOCUMENT v3.20.1
Stock Compensation Plans - RSU and PSU activity (Details) - $ / shares
shares in Millions
12 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Jan. 31, 2018
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Non-vested at beginning of period (in shares) 0.6    
Granted (in shares) 0.5    
Vested (in shares) (0.3)    
Forfeited (in shares) (0.1)    
Non-vested at end of period (in shares) 0.7 0.6  
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Nonvested, Weighted-Average Grant-Date Fair Value Roll Forward [Roll Forward]      
Non-vested at beginning of period (in usd per share) $ 88.49    
Granted (in usd per share) 117.12 $ 103.40 $ 91.96
Vested (in usd per share) 86.84    
Forfeited (in usd per share) 94.86    
Non-vested at end of period (in usd per share) $ 108.28 $ 88.49  
Performance Based Restricted Stock units (PSUs)      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Non-vested at beginning of period (in shares) 0.5    
Granted (in shares) 0.1    
Vested (in shares) (0.1)    
Forfeited (in shares) 0.0    
Non-vested at end of period (in shares) 0.5 0.5  
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Nonvested, Weighted-Average Grant-Date Fair Value Roll Forward [Roll Forward]      
Non-vested at beginning of period (in usd per share) $ 85.30    
Granted (in usd per share) 134.12 $ 85.26 $ 108.99
Vested (in usd per share) 63.05    
Forfeited (in usd per share) 57.08    
Non-vested at end of period (in usd per share) $ 102.46 $ 85.30